Patent US3729360A successfully refreshed from Google Patents.
US3729360A
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Portable thermoplastic pipe fusion apparatus
Assignee: McElroy Manufacturing Inc
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Filing: 1971-03-08
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Granted: 1973-04-24
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Expires: 1991-03-08
Abstract
Abstract A portable wheeled apparatus for use in fusing thermoplastic (i.e., polyethylene) pipe includes means for hydraulically actuating the pipe for facing the pipe ends, heating the pipe ends and fusing them together all in axial alignment of the pipe.
Inventors
- 👤 A Mcelroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:41
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B25; B25B; B25B11/00; B25B11/02; B25B5/00; B25B5/14; B25B5/147; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C65/2092; B29C65/78; B29C65/7802; B29C65/7841; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81422; B29C66/81423; B29C66/82; B29C66/824; B29C66/8242; B29C66/84; B29C66/841; B29C66/8414; B29C66/865; B29C66/8652; F; F16; F16L; F16L47/00; F16L47/26; B29C2793/00; B29C2793/0081; B29C66/70; B29C66/71; B29C66/861; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91421; B29C66/91431; B29C66/9161; B29C66/91641; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066; Y10T156/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |